All terrain bicycle frame



FIG. 1 is a top plan view thereof;

FIG. 2 is a right, side-elevational view thereof (the left, side-elevational view being a mirror image);

FIG. 3 is a front-elevational view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a rear elevational view thereof. 

The ornamental design for an all terrain bicycle frame, as shown and described. 